Because Opie and Anthony didn't blossom into full and terrible cows until they lost their major radio shows and dignity, which started ~8 years ago. People are talking about them still, now, because of the gigantic downward spiral they're both on (Anthony in particular).Ron and Fez was the superior show. How are people still talking about O&A 6 years after the fact?
For example, there's the moment where Ronnie B (of Ron and Fez) goes on Anthony's basement show and basically just flat out asks him "what, really, is your problem?" that happened several years after Anthony was removed from his own radio show.
Also, I can't believe we've gone 15 pages an no one has mentioned why people constantly fuck with Opie and Anthony. One thing that hasn't been mentioned thus far is that Opie and Anthony (and various offsites, like wackbag.com) had a group of special fans referred to as Pests - whos entire job was basically being Opie and Anthony's personal radio army.
If Opie and Anthony were feuding with another morning show? Hundreds and thousands of pests would call that show constantly and try and fuck it up by being disruptive, either by sneaking in O&A show references subtly or by getting on the air, playing along for a few minutes, and then just screaming the n-word until the call got dropped.
Opie and Anthony, themselves, as well as thier guests were also pests and shitbags and engaged in said behavior. They would book shitty guests intentionally just to fuck with them, they would deal with women being booked by having Patrice O'Neal come in and disrespect them, and they had Louis CK badger Donald Rumsfeld about being a lizard person, and so on.
So what happens when these Pests no longer have a show to follow or attack? They turned on Opie and Anthony themselves in a hilariously karmic fashion, an early 2000s version of "person who worked for woke twitter for years attacked and ruined by woke twitter" and it's a lot of those fans who started digging and found out about Anthony's tranny shennanigans, among other things. Opie and Anthony are being attacked much the way they attacked others, by the very same people they no longer control.